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Journal of Mining Sciences

2022 year, number 2

Collectability of Xanthates in Precipitation of Heavy Metals

T. G. Gavrilova, S. A. Kondrat'ev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Flotation, flotation activation, heavy metal ions, physisorbed collector action


The authors undertake a critical analysis of zinc flotation activation mechanisms, namely, ion exchange and electrochemical, and propose a new mechanism of activation of sphalerite flotation by heavy metal ions. Flotation can be activated by physisorption of the collector in the unit event of particle-bubble attachment. The causes of floatability of sphalerite activated by lead ions in the alkali range of pH are disclosed. The characteristic of zinc as a metal-activator consists in high solvability of zinc and xanthate compounds. The conditions of improved floatability of sphalerite after its activation by zinc ions are determined.